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Finding the Fourth Proportional to 619,402.30, 929,794.65 and 578,794.30

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Solution

The fourth proportional to 619,402.30, 929,794.65 and 578,794.30 is: 868,837.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,402.30 : 929,794.65 = 578,794.30 : x
  2. Step 2: Convert to fraction form
    619,402.30/929,794.65 = 578,794.30/x
  3. Step 3: Cross multiply
    619,402.30x = 929,794.65 × 578,794.30
  4. Step 4: Simplify right side
    619,402.30x = 538,159,843,590.50
  5. Step 5: Solve for x
    x = 538,159,843,590.50/619,402.30
  6. Step 6: Final answer
    x = 868,837.33

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.